Oil-bubneb



G. H. IRVINGAND B. LDURPHY.

OIL BURNER.

APPLICATION FILED MAR. I3. 1919.

...L v I f t IIIIIIIIIIIllllullllllllllliiiiiii` G. H'. IRVING AND B. F. DURPH'Y.

OIL BURNER.

APPLICATION FILED MAR. I3. |919.

Patentedept. 30, 19M.

2 SHEETS-SHEET 2.

airy-Www@ ATTORN EY GEORGE H. IRVING, 0F HAYWARD, AND BRADLEY F. DURIHY, OF SAN FRNCISCC, CALIFORNIA, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, T0 FORDZONE MANUFACTURING COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION oiipnomma.

.specicaton of Letters Patent. Patented Sept. 31D, 1191199,

Application led March 13, 1919. Serial No. 282,319.

and city and county of San Francisco, State have invented of California, respectively,

new and useful Improvements in Burners, of which the following is a specif'ieation.

This invention relates to oil burners, and particularly to a burner of the Bunsen type which is adapted to handle low gravity oils.

One of the ob]ects of the present invention is to provide a combination burner and gas generator capable of handling low gravity oils, such as kerosene, distillate, and the like, which is ladapted to operate on the Bunsen principle and which insures comparatively perfect combustion and avoids soot or carbon formations. Another object of the in# Avention is to provide a gas generating attachment of novel construction, and, in conjunction therewith, a pilot light and generator which permit instantaneous lighting of the burner whenever required. Further objects will hereinafter appear.

rThe invention consists of the parts and the construction, combination and. arrangement of parts hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a central, vertical section ofthe burner.

Fig. 2 is a detail view of the nozzle and the valves regulating the flow to the same. Fig. 3 is a plan view of the burner. t

Referring to the drawings in detail, A indicates a mixing tube of suitable construction, 2 a nozzle, in this instance positioned near the lower end of the mixing tube, 3 a gas generating chamber, 1an auxiliary gas generating tube and 5 a primary gas generating tube. The generating chamber 3 ma -be cast integral with the mixing tube or otherwise secured to the same. It is here shown as positioned near the upper end y of the tube and is supplied with oil by means of the primary generating tube 5 which is connected at one end with an oil supply pipe G, as shown at 7, and at the opposite end with the generating chamber 3, as at S. Oil may be delivered to the tube 6 from needle valves 12 and 13.

any suitable sour-ce of supply and the flow through said tube is, in this instance, more or less checked as it is filled with gravel 9, pumice stone or other material which in. sures a uniform flow.

The upper end of the tube 6 is secured orl screwed into an extension 10 formed on the lower side of the generating chamber 3 and does not communicate with the chamber except through the primary tube 5, which is p connected with the tube 6, as shown at 7, and with the generating chamber 3, as at 8. All oil admitted to Vthe generating chamber 3 must therefore pass through the tube 5, which, in this instance, is coiled-shaped, said coil consisting of an upperand a lower section, as shown at 5 and 5. rl`his .coil is at all times exposed to the ame of the burner, as will hereinafter be described, and it therefore delivers the oil in the form of vapor to the chamber 3Q It escapes from the chamber 3 through a pipe 11 which is connected with the nozzle 2, the flow through said nozzle being regulated by a pair of The valve 12 controls the escape directly through the nozzle tube 2, while the valve 13 serves the function of entirely closing off the flow when it is desired to shut down the burner. The pipe 11 communicates `with a passage which is adapted to be opened and closed by the valve 13, and, as this passage is offset, as shown at 14, (see Fig. 2) with relation to the central passage through which the needle .valve 12 extends, it is necessary to form a or cap 16 is, however, employed in the present instance. This cap is provided with a series of perforations 17 at the upper end and a series of perforations 18 at the lower end. The gas delivered by the mixing tube will thus discharge through the perforations '17 and 13 and therefore, when ignited, will surrounding the tube, a nozzle positioned near the lower end ,of the tube, a tube connecting the nozzle with the generator, .a source of oil. supply, a primary generating tube surrounding the mixing tube, said primary generating tube being connected at one end with-'a source of oil supply and at the oppositeend. with the generator,A a cap lim interior of the primary generating tube, said cap inclosing the upper -end of the mixing tube, an annular series of radially disposedopenings formed in the cap adapted to direct the flame produced 'by' the discharging gas against the primary generating tube, and an auxiliary generating tube consisting of a series of coils surrounding the mixing tube above the generator, sald auxiliary generator coil havingits opposite terminal ends both connected with thev generator.

r 2. A combination burner and generatorv comprising a mixing tube, a gas generator surrounding the tube, a nozzle positioned near the lower end of the tube, a tube con- *i necting the nozzle with the generator, a 25 source of oil supply, a primary generating tu-be surrounding the `mixing tube, said primary generating tu'be being connected at one end with a source of oil supply and at the opposite end withjthe generator, a cap interior ofthe primary generating tube, said cap inclosing theupper end of the 'mixing tube,.an annular series of` radially disposed openings formed inthe cap adapted to direct the iame produced by the discharging gas against the prim-ary generating tube,

an auxiliary generatin tube consisting of a series of coils surroun ing the 'mixing tube above the generator, said auxiliary generating coil having its opposite terminal ends both connected with the generator, a second auxiliary generating -tube `comprising a.

l' cone-shaped coil surrounding the upper pornear the lower end of the tube, a tube contion of the mixing tube, said coil having its terminal ends connected with the generator and a series of perforations formed in the upper portion of said coil adapted to project a series of pilot flames downwardly against` the'lower portion of the coil.

. 3. A combination burner and generator comprising a mixing tube, a gas generator surrounding 4the tube, a nozzle positioned necting the nozzle with the generator', a source of oil supply, a primary generating .tube surrounding the mixing tube, said primary generating tube being connected at one-end with a source of oil supply and at the op-posite end with the generator, a cap cap inclosing thev upper end of the mixing tube, an annular series of radially disposed openings formed in the cap adapted to direct the flame yproduced by the discharging 'gas against the primary generating tube, an auxiliary generating tube comprising a cone-shaped coil surrounding the upper portionof the mixing tube, said coil having its interior of the primary generating tube, said terminal ends connected with the generator inclosing the upper end of the mixing tube,

a nozzle positioned at the lower end of the f i mixing tube, means for delivering oil to the generator, means for conveying the gas generated to the nozzle, an annular series of radially disposed openings 1formed in the cap to produce an annular series of-radially tible mixture formed in the mixing tube, a generating coil surrounding the upper end of the mixing tube and connected with the generator, a series of perforations in said coil adapted to project a series of pilot flames said flames serving the function of igniting the gas discharging through the flame openings in the cap and also serving the function of heating the generating coil, and a primary generating coil surrounding 4the cap and positioned so -as to be exposed to the main flame of the burner, said generating co-il being connected at one end with a source of 4oil supply and at the opposite end with the generator.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

GEORGE H. IRVING. BRADLEY l". DURPHY.

Witnesses: ,'lHos. CAsrBnRc,

- JOHN H. HERRING.

' discharging Hames supplied with a combus- 

